Nut and bolt lock.



PATENTED JAN. 17, 1905.

A. FRATANTUONU.

NUT AND BOLT LOCK. APPLIUATIoN FILED Nov. 1o. 1904.

NiTn STaTs Patented January 1'?, 1905.

ANTONIO FRATANIUONO, OF IVASHINGTON, DISTRICT OF COLUMBIA, AS- SIGNOR OF ONE-HALF TO VVILLIAh/I C. TAYLOR, OF IVASHINGTON,

vDISTRICT OF COLUMBIA.

NUT AND BOLT LOOM..

SPECIFICATION forming part of Letters Patent No. 780,333, dated January 1'7, 1905.

Application tiled November l0, 1904. Serial No. 232,176.

Be it known that I, ANTONIO FnA'rAN'rUoNo, a citizen of the United States, residing at Ihfashington, in the District oi' Columbia, have 5 invented certain new and useful Improvements in Nut and Bolt Locks; and I do declare the Yfollowing to be a full, clear, and exact dcscription of the invention, such as will enable others skilled in the art to which it appertains ro to make and use the same.

This invention relates to improvements in nut and bolt locks.

The object ot' the invention is to provide a locking device for nuts whereby the same may I5 be secured in adjusted positions upon a bolt.

A further object is to provide a device of this character which will be simple in construction, strong and durable, eiiicient, and which will securely hold the nut against rov 2o tation upon the bolt.

With these and other objects in View the invention consists ot' certain novel features of construction, combination, and arrangement ot parts, as will be hereinafter described and claimed.

In the accompanying drawings, Figure l is a perspective view of a bolt and nut having my improved locking device applied thereto. Fig. 2 is a longitudinal sectional view thereof.

3o Fig. 3 is a detail sectional view through the nut, taken on a line with the pivot and holding-screw ot' the locking dog or pawl; and Fig. t is a transverse sectional view through the nut and the end ot' the bolt, taken on a line with the locking dog and plate, showing the same in full lines in engagement with the bolt and in dotted lines in a disengaged position to permit the nut to be unscrewed from the bolt.

40 Referring more particularly to the drawings, l denotes a bolt one side of which is cut away to form a fiat face 2.

3 denotes a nut in one ot' the side edges of which is formed a slot or recess fl, which intersects the threaded bolt-hole of the nut.

In the slot I is arranged a locking plate or dog 5, which is pivotally connected to the nut at one corner of the same by means of a pivot pin or rivet 6. The opposite end of the locking` plate or dog 5 has `Formed thereon a lat- 50 eral projection 7, which is adapted to engage the inner wall of the slot it when said locking plate or dog in closed position. In this end oiAl the dog 5 is formed an aperture or hole S, which when the dog is in closed position is adapted to aline with openings or apertures 9 formed in the adjacent corner oi the nut. The holes 9 in the nut are provided with threads, and into the same and through the aperture 8 in the locking-dogl is adapted to be 60 screwed a holding screw l0, which when screwed through said apertures will hold the plate or dog 5 in position against the fiat side oi' the bolt, and will thereby prevent the unscrewing oi the nut from the bolt.

Pivotally connected to the upper end of the pivot-pin (i is a spring latch linger or plate I2, on the opposite end or' which is formed an inwardly-projecting teat 13, which when the latch-plate is swung inwardly will spring into 7o the end of the screw-hole 9 in the nut and will engage the countersunk head of the screw 10, thereby preventing said screw from working out ot' the holes 8 and 9.

In using' the device the nut is screwed upon 75 the bolt to any desired position, after which the locking dog or plate is swung inwardly into engagement with the Hat side ot' the bolt, thus bringing the screw-holes 8 and 9 in said nut and locking-pand into alinement. The screw l() is now screwed into said openings, thereby holding said locking dogI and plate into cngagement with the flat side ot said bolt, after which the spring-latch l2 is sprung into position, thus preventing said screw from work- S5 ing out ot' place.

From the foregoing description, taken in connection with the accompanying' drawings, the construction and operation ol the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrilicing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a nut and bolt lock, the combination With a bolt having a Hat side, of a nut having formed therein a transversely-disposed slot or recess intersecting the bolt-hole of the nut, a loclzing'idog or pawl pivotally mounted in said slot to engage the iat side of said bolt, and means whereby said locking-dog is secured in engagement with said bolt, substantially as described.

2. In a nut and bolt lock, the combination with a bolt having' a fiat side, of a nut having' formed therein a slot or recess intersecting' the bolt-hole of the nut, a locking dog or pawl pivotally mounted in said slot to engage the lat side of said bolt, a holding-screw, screwed through alined apertures in said nut and said pawl or dog, and means wherebysaid holdingscrew is prevented from working out of said apertures, substantially as described.

3. In a nut and bolt locl, the combination with a bolt having a flat side, of a nut having formed therein a slot or recess intersecting the bolt-hole of the nut, a locking dog or pawl pivotally mounted in said slot to engage the Hat side of said bolt, a holding-screw, screwed through alined apertures in said nut and said pawl or dog, and a spring latch-linger pivot- Y ally mounted on said nut to engage the head of said holding-screw, thereby preventing the same from working out of said apertures, substantially as described.

4. In a nut and bolt lock, the combination with a bolt having a liat side, of a nut having formed therein a slot or recess intersecting the bolt-hole of the nut, a locking dog or pawl pivotally mounted in said slot to engage the flat side of said bolt, a holding-screw, screwed through alined apertures in said nut and said pawl or dog, a spring latch-finger pivotallw7 mounted on the pivot-pin of said locking-dog, ateat formed on the under side of said latchfinger to enter the screw hole or aperture in said nut and to engage the countersunk head of said holding-screw, thereby preventing said screw from working' out of said hole and also holding said latch -finger in place, substan.` tially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ANTONIO FRATANT UONO` llfitiiesses:

BENJ. Gr. CowL, WM. C. TAYLORi 

